<template>
  <!--  父级页面：控制除登录页面的其他页面的显示  -->
    <div style="display: flex;">
        <!--        左侧区域-->
        <div :style="{width:(isCollapse ? '64px' : '208px')}">
            <!--            左侧菜单栏-->
            <el-menu background-color="#3C82F5"
                     style="width: 100%;height: 100%;min-height: 100vh;"
                     text-color="#fff"
                     active-text-color="#ff0"
                     :collapse="isCollapse"
                     :collapse-transition="false"
                     unique-opened router
                     @select="selectMenu"
            >
                <!--                左侧菜单栏顶部条-->
                <el-row :gutter="10" style="padding-top: 10px;">
                    <el-col :span="2"></el-col>
                    <el-col :span="7" style="padding-left: 7px;">
                        <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px;"></el-avatar>
                    </el-col>
                    <el-col :span="isCollapse?0:13">
                        <router-link to="/"
                                     style="color: #fff;text-decoration:none;font-weight: bold;position: relative;top: 8px;left: 2px;">
                            智慧车辆
                        </router-link>
                    </el-col>
                </el-row>
                <el-sub-menu index="1">
                    <template #title>
                        <el-icon style="font-size: 21px;">
                            <User/>
                        </el-icon>
                        <span>用户管理</span>
                    </template>
                    <el-menu-item index="/user">用户列表</el-menu-item>
                </el-sub-menu>
                <el-sub-menu index="2">
                    <template #title>
                        <el-icon style="font-size: 21px;">
                            <Van/>
                        </el-icon>
                        <span>车辆管理</span>
                    </template>
                    <el-menu-item index="/vehicle">基本信息</el-menu-item>
                </el-sub-menu>
                <el-sub-menu index="3">
                    <template #title>
                        <el-icon style="font-size: 21px;">
                            <Place/>
                        </el-icon>
                        <span>调度管理</span>
                    </template>
                    <el-menu-item index="/application">申请列表</el-menu-item>
                    <el-menu-item index="/audit">调度审核</el-menu-item>
                    <el-menu-item index="/distribute">车辆分配</el-menu-item>
                </el-sub-menu>
                <el-sub-menu index="4">
                    <template #title>
                        <el-icon style="font-size: 21px;">
                            <Location/>
                        </el-icon>
                        <span>电子围栏</span>
                    </template>
                    <el-menu-item index="/geofence">围栏管理</el-menu-item>
                </el-sub-menu>
                <el-sub-menu index="5">
                    <template #title>
                        <el-icon style="font-size: 21px;">
                            <MessageBox/>
                        </el-icon>
                        <span>数据字典</span>
                    </template>
                    <el-menu-item index="/geofence">字典管理</el-menu-item>
                </el-sub-menu>
            </el-menu>
        </div>
        <!--        右侧区域-->
        <div :style="{width:(isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px)')}">
<!--            右侧顶部条菜单栏-->
            <el-header style="background-color: #fff;padding-top: 22px;height: 10vh;">
                <!--            右侧顶部条 折叠图标+退出登录-->
                <el-row :gutter="10">
                    <el-col :span="18">
                        <el-icon style="font-size: 20px;position: relative;top: 3px;"
                                 @click="changeCallapse()"
                        >
                            <Expand/>
                        </el-icon>
                    </el-col>
                    <!--                用户名与退出登录-->
                    <el-col :span="6" style="position: relative;">
                        <el-dropdown trigger="click" style="position:absolute;right: 20px;">
                          <span style="font-size: 19px;font-weight: bold;">
                     {{ user.username }}
                     <el-icon><arrow-down/></el-icon>
                       </span>
                            <template #dropdown>
                                <el-dropdown-menu>
                                    <el-dropdown-item @click="logout()">退出登录</el-dropdown-item>
                                </el-dropdown-menu>
                            </template>
                        </el-dropdown>
                    </el-col>
                </el-row>
                <!--            面包屑导航-->
                <el-breadcrumb separator="/" style="position: relative;top: 20px;">
                    <el-breadcrumb-item>首页</el-breadcrumb-item>
                    <el-breadcrumb-item v-for="item in breadCrumb">{{item}}</el-breadcrumb-item>
                </el-breadcrumb>
<!--                右侧下半部分 是可变的主题区域-->
            </el-header>
            <el-main style="min-height: 90vh;padding: 0;overflow-y:auto;">
                <router-view/>
            </el-main>

        </div>
    </div>

  <!--    <router-view/>-->
</template>

<script setup>
//定义变量用来控制左侧菜单栏是否折叠,默认不折叠
import {ref} from "vue";

const isCollapse = ref(false);
const changeCallapse = () => {
    isCollapse.value = !isCollapse.value;
}
const user = ref(getUser());
const logout = () => {
    if (confirm("确定退出登录吗？")){
        localStorage.removeItem("user");
        localStorage.removeItem("breadCrumb");
        window.location.href = "/login";
        user.value = '';
}
}
let map = {
    '/user':['用户管理','用户列表'],
    '/vehicle':['车辆管理','基本信息'],
    '/application': ['调度管理','申请列表'],
    '/audit': ['调度管理','调度审核'],
    '/distribute':['调度管理','车辆分配'],
    '/geofence':['电子围栏','围栏管理'],
    '/dict':['数据字典','字典管理']
};

const breadCrumb = ref(JSON.parse(localStorage.getItem('breadcrumb') || '["用户管理", "用户列表"]'));
//选择菜单项时触发
const selectMenu=(index)=>{
    breadCrumb.value=map[index];
    //防止刷新页面丢失
    localStorage.setItem('breadCrumb',JSON.stringify(breadCrumb.value));
}
</script>